Tricyclic Heteroaromatic Ring Systems IV. Synthesis and Reactions of 4H-Pyrazolobenzimidazole

DOI: 10.1007/BF00798441

Source and publish data:

Monatshefte fur Chemie p. 425 - 432 (1983)

Update date:2022-08-18

Topics:

Authors:

Khan, Misbahul A.

Ribeiro, Vera L. T.

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Article abstract of DOI:10.1007/BF00798441

The 4H-Pyrazolo<1,5-a>benzimidazole ring system was prepared by an intramolecular Ullmann arylation of 4-substituted 1-(o-aminophenyl)pyrazole while other derivatives were obtained by functional group modifications.Some electrophilic substitutions (nitration, bromination) and alkylations were also carried out. - Keywords: Alkylation; Bromination; Nitration; Ullmann arylation

Full text of DOI:10.1007/BF00798441

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